/*
 * wpa_supplicant / WPS integration
 * Copyright (c) 2008-2014, Jouni Malinen <j@w1.fi>
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#include "includes.h"

#include "common.h"
#include "eloop.h"
#include "uuid.h"
#include "crypto/random.h"
#include "crypto/dh_group5.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "common/wpa_common.h"
#include "common/wpa_ctrl.h"
#include "eap_common/eap_wsc_common.h"
#include "eap_peer/eap.h"
#include "eapol_supp/eapol_supp_sm.h"
#include "rsn_supp/wpa.h"
#include "wps/wps_attr_parse.h"
#include "config.h"
#include "wpa_supplicant_i.h"
#include "driver_i.h"
#include "notify.h"
#include "blacklist.h"
#include "bss.h"
#include "scan.h"
#include "ap.h"
#include "p2p/p2p.h"
#include "p2p_supplicant.h"
#include "wps_supplicant.h"

#ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
#define WPS_PIN_SCAN_IGNORE_SEL_REG 3
#endif							/* WPS_PIN_SCAN_IGNORE_SEL_REG */

/*
 * The minimum time in seconds before trying to associate to a WPS PIN AP that
 * does not have Selected Registrar TRUE.
 */
#ifndef WPS_PIN_TIME_IGNORE_SEL_REG
#define WPS_PIN_TIME_IGNORE_SEL_REG 5
#endif							/* WPS_PIN_TIME_IGNORE_SEL_REG */

static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
static void wpas_clear_wps(struct wpa_supplicant *wpa_s);

static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s)
{
	os_free(wpa_s->wps_ap);
	wpa_s->wps_ap = NULL;
	wpa_s->num_wps_ap = 0;
	wpa_s->wps_ap_iter = 0;
}

static void wpas_wps_assoc_with_cred(void *eloop_ctx, void *timeout_ctx)
{
	struct wpa_supplicant *wpa_s = eloop_ctx;
	int use_fast_assoc = timeout_ctx != NULL;

	wpa_printf(MSG_DEBUG, "WPS: Continuing association after eapol_cb");
	if (!use_fast_assoc || wpa_supplicant_fast_associate(wpa_s) != 1) {
		wpa_supplicant_req_scan(wpa_s, 0, 0);
	}
}

static void wpas_wps_assoc_with_cred_cancel(struct wpa_supplicant *wpa_s)
{
	eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *)0);
	eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *)1);
}

int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
{
	if (wpas_p2p_wps_eapol_cb(wpa_s) > 0) {
		return 1;
	}

	if (!wpa_s->wps_success && wpa_s->current_ssid && eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
		const u8 *bssid = wpa_s->bssid;
		if (is_zero_ether_addr(bssid)) {
			bssid = wpa_s->pending_bssid;
		}

		wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR " did not succeed - continue trying to find " "suitable AP", MAC2STR(bssid));
		wpa_blacklist_add(wpa_s, bssid);

		wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
		wpa_s->reassociate = 1;
		wpa_supplicant_req_scan(wpa_s, wpa_s->blacklist_cleared ? 5 : 0, 0);
		wpa_s->blacklist_cleared = 0;
		return 1;
	}

	wpas_wps_clear_ap_info(wpa_s);
	eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
	if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success) {
		wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
	}

	if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid && !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
		int disabled = wpa_s->current_ssid->disabled;
		unsigned int freq = wpa_s->assoc_freq;
		struct wpa_bss *bss;
		struct wpa_ssid *ssid = NULL;
		int use_fast_assoc = 0;

		wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - " "try to associate with the received credential " "(freq=%u)", freq);
		wpa_s->own_disconnect_req = 1;
		wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
		if (disabled) {
			wpa_printf(MSG_DEBUG, "WPS: Current network is " "disabled - wait for user to enable");
			return 1;
		}
		wpa_s->after_wps = 5;
		wpa_s->wps_freq = freq;
		wpa_s->normal_scans = 0;
		wpa_s->reassociate = 1;

		wpa_printf(MSG_DEBUG, "WPS: Checking whether fast association " "without a new scan can be used");
		bss = wpa_supplicant_pick_network(wpa_s, &ssid);
		if (bss) {
			struct wpabuf *wps;
			struct wps_parse_attr attr;

			wps = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
			if (wps && wps_parse_msg(wps, &attr) == 0 && attr.wps_state && *attr.wps_state == WPS_STATE_CONFIGURED) {
				use_fast_assoc = 1;
			}
			wpabuf_free(wps);
		}

		/*
		 * Complete the next step from an eloop timeout to allow pending
		 * driver events related to the disconnection to be processed
		 * first. This makes it less likely for disconnection event to
		 * cause problems with the following connection.
		 */
		wpa_printf(MSG_DEBUG, "WPS: Continue association from timeout");
		wpas_wps_assoc_with_cred_cancel(wpa_s);
		eloop_register_timeout(0, 10000, wpas_wps_assoc_with_cred, wpa_s, use_fast_assoc ? (void *)1 : (void *)0);
		return 1;
	}

	if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
		wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting " "for external credential processing");
		wpas_clear_wps(wpa_s);
		wpa_s->own_disconnect_req = 1;
		wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
		return 1;
	}

	return 0;
}

static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, const struct wps_credential *cred)
{
	struct wpa_driver_capa capa;
	struct wpa_bss *bss;
	const u8 *ie;
	struct wpa_ie_data adv;
	int wpa2 = 0, ccmp = 0;

	/*
	 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
	 * case they are configured for mixed mode operation (WPA+WPA2 and
	 * TKIP+CCMP). Try to use scan results to figure out whether the AP
	 * actually supports stronger security and select that if the client
	 * has support for it, too.
	 */

	if (wpa_drv_get_capa(wpa_s, &capa)) {
		return;    /* Unknown what driver supports */
	}

	if (ssid->ssid == NULL) {
		return;
	}
	bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
	if (bss == NULL) {
		wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS " "table - use credential as-is");
		return;
	}

	wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");

	ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
	if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
		wpa2 = 1;
		if (adv.pairwise_cipher & WPA_CIPHER_CCMP) {
			ccmp = 1;
		}
	} else {
		ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
		if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 && adv.pairwise_cipher & WPA_CIPHER_CCMP) {
			ccmp = 1;
		}
	}

	if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) && (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
		/*
		 * TODO: This could be the initial AP configuration and the
		 * Beacon contents could change shortly. Should request a new
		 * scan and delay addition of the network until the updated
		 * scan results are available.
		 */
		wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA " "support - use credential as-is");
		return;
	}

	if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) && (ssid->pairwise_cipher & WPA_CIPHER_TKIP) && (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
		wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential " "based on scan results");
		if (wpa_s->conf->ap_scan == 1) {
			ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
		} else {
			ssid->pairwise_cipher = WPA_CIPHER_CCMP;
		}
	}

	if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) && (ssid->proto & WPA_PROTO_WPA) && (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
		wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential " "based on scan results");
		if (wpa_s->conf->ap_scan == 1) {
			ssid->proto |= WPA_PROTO_RSN;
		} else {
			ssid->proto = WPA_PROTO_RSN;
		}
	}
}

static void wpas_wps_remove_dup_network(struct wpa_supplicant *wpa_s, struct wpa_ssid *new_ssid)
{
	struct wpa_ssid *ssid, *next;

	for (ssid = wpa_s->conf->ssid, next = ssid ? ssid->next : NULL; ssid; ssid = next, next = ssid ? ssid->next : NULL) {
		/*
		 * new_ssid has already been added to the list in
		 * wpas_wps_add_network(), so skip it.
		 */
		if (ssid == new_ssid) {
			continue;
		}

		if (ssid->bssid_set || new_ssid->bssid_set) {
			if (ssid->bssid_set != new_ssid->bssid_set) {
				continue;
			}
			if (os_memcmp(ssid->bssid, new_ssid->bssid, ETH_ALEN) != 0) {
				continue;
			}
		}

		/* compare SSID */
		if (ssid->ssid_len == 0 || ssid->ssid_len != new_ssid->ssid_len) {
			continue;
		}

		if (ssid->ssid && new_ssid->ssid) {
			if (os_memcmp(ssid->ssid, new_ssid->ssid, ssid->ssid_len) != 0) {
				continue;
			}
		} else if (ssid->ssid || new_ssid->ssid) {
			continue;
		}

		/* compare security parameters */
		if (ssid->auth_alg != new_ssid->auth_alg || ssid->key_mgmt != new_ssid->key_mgmt || (ssid->group_cipher != new_ssid->group_cipher && !(ssid->group_cipher & new_ssid->group_cipher & WPA_CIPHER_CCMP))) {
			continue;
		}

		/*
		 * Some existing WPS APs will send two creds in case they are
		 * configured for mixed mode operation (WPA+WPA2 and TKIP+CCMP).
		 * Try to merge these two creds if they are received in the same
		 * M8 message.
		 */
		if (ssid->wps_run && ssid->wps_run == new_ssid->wps_run && wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) {
			if (new_ssid->passphrase && ssid->passphrase && os_strcmp(new_ssid->passphrase, ssid->passphrase) != 0) {
				wpa_printf(MSG_DEBUG, "WPS: M8 Creds with different passphrase - do not merge");
				continue;
			}

			if (new_ssid->psk_set && (!ssid->psk_set || os_memcmp(new_ssid->psk, ssid->psk, 32) != 0)) {
				wpa_printf(MSG_DEBUG, "WPS: M8 Creds with different PSK - do not merge");
				continue;
			}

			if ((new_ssid->passphrase && !ssid->passphrase) || (!new_ssid->passphrase && ssid->passphrase)) {
				wpa_printf(MSG_DEBUG, "WPS: M8 Creds with different passphrase/PSK type - do not merge");
				continue;
			}

			wpa_printf(MSG_DEBUG, "WPS: Workaround - merge likely WPA/WPA2-mixed mode creds in same M8 message");
			new_ssid->proto |= ssid->proto;
			new_ssid->pairwise_cipher |= ssid->pairwise_cipher;
		} else {
			/*
			 * proto and pairwise_cipher difference matter for
			 * non-mixed-mode creds.
			 */
			if (ssid->proto != new_ssid->proto || ssid->pairwise_cipher != new_ssid->pairwise_cipher) {
				continue;
			}
		}

		/* Remove the duplicated older network entry. */
		wpa_printf(MSG_DEBUG, "Remove duplicate network %d", ssid->id);
		wpas_notify_network_removed(wpa_s, ssid);
		if (wpa_s->current_ssid == ssid) {
			wpa_s->current_ssid = NULL;
		}
		wpa_config_remove_network(wpa_s->conf, ssid->id);
	}
}

static int wpa_supplicant_wps_cred(void *ctx, const struct wps_credential *cred)
{
	struct wpa_supplicant *wpa_s = ctx;
	struct wpa_ssid *ssid = wpa_s->current_ssid;
	u16 auth_type;
#ifdef CONFIG_WPS_REG_DISABLE_OPEN
	int registrar = 0;
#endif							/* CONFIG_WPS_REG_DISABLE_OPEN */

	if ((wpa_s->conf->wps_cred_processing == 1 || wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
		size_t blen = cred->cred_attr_len * 2 + 1;
		char *buf = os_malloc(blen);
		if (buf) {
			wpa_snprintf_hex(buf, blen, cred->cred_attr, cred->cred_attr_len);
			wpa_msg(wpa_s, MSG_INFO, "%s%s", WPS_EVENT_CRED_RECEIVED, buf);
			os_free(buf);
		}

		wpas_notify_wps_credential(wpa_s, cred);
	} else {
		wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
	}

	wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", cred->cred_attr, cred->cred_attr_len);

	if (wpa_s->conf->wps_cred_processing == 1) {
		return 0;
	}

	wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
	wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", cred->auth_type);
	wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
	wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
	wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", cred->key, cred->key_len);
	wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, MAC2STR(cred->mac_addr));

	auth_type = cred->auth_type;
	if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
		wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode " "auth_type into WPA2PSK");
		auth_type = WPS_AUTH_WPA2PSK;
	}

	if (auth_type != WPS_AUTH_OPEN && auth_type != WPS_AUTH_WPAPSK && auth_type != WPS_AUTH_WPA2PSK) {
		wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for " "unsupported authentication type 0x%x", auth_type);
		return 0;
	}

	if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) {
		if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) {
			wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with " "invalid Network Key length %lu", (unsigned long)cred->key_len);
			return -1;
		}
	}

	if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
		wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based " "on the received credential");
#ifdef CONFIG_WPS_REG_DISABLE_OPEN
		if (ssid->eap.identity && ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN && os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR, WSC_ID_REGISTRAR_LEN) == 0) {
			registrar = 1;
		}
#endif							/* CONFIG_WPS_REG_DISABLE_OPEN */
		os_free(ssid->eap.identity);
		ssid->eap.identity = NULL;
		ssid->eap.identity_len = 0;
		os_free(ssid->eap.phase1);
		ssid->eap.phase1 = NULL;
		os_free(ssid->eap.eap_methods);
		ssid->eap.eap_methods = NULL;
		if (!ssid->p2p_group) {
			ssid->temporary = 0;
			ssid->bssid_set = 0;
		}
		ssid->disabled_until.sec = 0;
		ssid->disabled_until.usec = 0;
		ssid->auth_failures = 0;
	} else {
		wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the " "received credential");
		ssid = wpa_config_add_network(wpa_s->conf);
		if (ssid == NULL) {
			return -1;
		}
		if (wpa_s->current_ssid) {
			/*
			 * Should the GO issue multiple credentials for some
			 * reason, each credential should be marked as a
			 * temporary P2P group similarly to the one that gets
			 * marked as such based on the pre-configured values
			 * used for the WPS network block.
			 */
			ssid->p2p_group = wpa_s->current_ssid->p2p_group;
			ssid->temporary = wpa_s->current_ssid->temporary;
		}
		wpas_notify_network_added(wpa_s, ssid);
	}

	wpa_config_set_network_defaults(ssid);
	ssid->wps_run = wpa_s->wps_run;

	os_free(ssid->ssid);
	ssid->ssid = os_malloc(cred->ssid_len);
	if (ssid->ssid) {
		os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
		ssid->ssid_len = cred->ssid_len;
	}

	switch (cred->encr_type) {
	case WPS_ENCR_NONE:
		break;
	case WPS_ENCR_TKIP:
		ssid->pairwise_cipher = WPA_CIPHER_TKIP;
		break;
	case WPS_ENCR_AES:
		ssid->pairwise_cipher = WPA_CIPHER_CCMP;
		if (wpa_s->drv_capa_known && (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_GCMP)) {
			ssid->pairwise_cipher |= WPA_CIPHER_GCMP;
			ssid->group_cipher |= WPA_CIPHER_GCMP;
		}
		break;
	}

	switch (auth_type) {
	case WPS_AUTH_OPEN:
		ssid->auth_alg = WPA_AUTH_ALG_OPEN;
		ssid->key_mgmt = WPA_KEY_MGMT_NONE;
		ssid->proto = 0;
#ifdef CONFIG_WPS_REG_DISABLE_OPEN
		if (registrar) {
			wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK "id=%d - Credentials for an open " "network disabled by default - use " "'select_network %d' to enable", ssid->id, ssid->id);
			ssid->disabled = 1;
		}
#endif							/* CONFIG_WPS_REG_DISABLE_OPEN */
		break;
	case WPS_AUTH_WPAPSK:
		ssid->auth_alg = WPA_AUTH_ALG_OPEN;
		ssid->key_mgmt = WPA_KEY_MGMT_PSK;
		ssid->proto = WPA_PROTO_WPA;
		break;
	case WPS_AUTH_WPA2PSK:
		ssid->auth_alg = WPA_AUTH_ALG_OPEN;
		ssid->key_mgmt = WPA_KEY_MGMT_PSK;
		ssid->proto = WPA_PROTO_RSN;
		break;
	}

	if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
		if (cred->key_len == 2 * PMK_LEN) {
			if (hexstr2bin((const char *)cred->key, ssid->psk, PMK_LEN)) {
				wpa_printf(MSG_ERROR, "WPS: Invalid Network " "Key");
				return -1;
			}
			ssid->psk_set = 1;
			ssid->export_keys = 1;
		} else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
			os_free(ssid->passphrase);
			ssid->passphrase = os_malloc(cred->key_len + 1);
			if (ssid->passphrase == NULL) {
				return -1;
			}
			os_memcpy(ssid->passphrase, cred->key, cred->key_len);
			ssid->passphrase[cred->key_len] = '\0';
			wpa_config_update_psk(ssid);
			ssid->export_keys = 1;
		} else {
			wpa_printf(MSG_ERROR, "WPS: Invalid Network Key " "length %lu", (unsigned long)cred->key_len);
			return -1;
		}
	}
	ssid->priority = wpa_s->conf->wps_priority;

	wpas_wps_security_workaround(wpa_s, ssid, cred);

	wpas_wps_remove_dup_network(wpa_s, ssid);

#ifndef CONFIG_NO_CONFIG_WRITE
	if (wpa_s->conf->update_config && wpa_config_write(wpa_s->confname, wpa_s->conf)) {
		wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
		return -1;
	}
#endif							/* CONFIG_NO_CONFIG_WRITE */

	if (ssid->priority) {
		wpa_config_update_prio_list(wpa_s->conf);
	}

	/*
	 * Optimize the post-WPS scan based on the channel used during
	 * the provisioning in case EAP-Failure is not received.
	 */
	wpa_s->after_wps = 5;
	wpa_s->wps_freq = wpa_s->assoc_freq;

	return 0;
}

static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s, struct wps_event_m2d *m2d)
{
	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D "dev_password_id=%d config_error=%d", m2d->dev_password_id, m2d->config_error);
	wpas_notify_wps_event_m2d(wpa_s, m2d);
#ifdef CONFIG_P2P
	if (wpa_s->parent && wpa_s->parent != wpa_s) {
		wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D "dev_password_id=%d config_error=%d", m2d->dev_password_id, m2d->config_error);
	}
	if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
		/*
		 * Notify P2P from eloop timeout to avoid issues with the
		 * interface getting removed while processing a message.
		 */
		eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb, wpa_s, NULL);
	}
#endif							/* CONFIG_P2P */
}

static void wpas_wps_clear_timeout(void *eloop_ctx, void *timeout_ctx)
{
	struct wpa_supplicant *wpa_s = eloop_ctx;
	wpa_printf(MSG_DEBUG, "WPS: Clear WPS network from timeout");
	wpas_clear_wps(wpa_s);
}

static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s, struct wps_event_fail *fail)
{
	if (fail->error_indication > 0 && fail->error_indication < NUM_WPS_EI_VALUES) {
		wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", fail->msg, fail->config_error, fail->error_indication, wps_ei_str(fail->error_indication));
		if (wpa_s->parent && wpa_s->parent != wpa_s) {
			wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", fail->msg, fail->config_error, fail->error_indication, wps_ei_str(fail->error_indication));
		}
	} else {
		wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d config_error=%d", fail->msg, fail->config_error);
		if (wpa_s->parent && wpa_s->parent != wpa_s) {
			wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL "msg=%d config_error=%d", fail->msg, fail->config_error);
		}
	}

	/*
	 * Need to allow WPS processing to complete, e.g., by sending WSC_NACK.
	 */
	wpa_printf(MSG_DEBUG, "WPS: Register timeout to clear WPS network");
	eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
	eloop_register_timeout(0, 100000, wpas_wps_clear_timeout, wpa_s, NULL);

	wpas_notify_wps_event_fail(wpa_s, fail);
	wpas_p2p_wps_failed(wpa_s, fail);
}

static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);

static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
{
	struct wpa_ssid *ssid;
	int changed = 0;

	eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);

	for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
		if (ssid->disabled_for_connect && ssid->disabled) {
			ssid->disabled_for_connect = 0;
			ssid->disabled = 0;
			wpas_notify_network_enabled_changed(wpa_s, ssid);
			changed++;
		}
	}

	if (changed) {
#ifndef CONFIG_NO_CONFIG_WRITE
		if (wpa_s->conf->update_config && wpa_config_write(wpa_s->confname, wpa_s->conf)) {
			wpa_printf(MSG_DEBUG, "WPS: Failed to update " "configuration");
		}
#endif							/* CONFIG_NO_CONFIG_WRITE */
	}
}

static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
{
	struct wpa_supplicant *wpa_s = eloop_ctx;
	/* Enable the networks disabled during wpas_wps_reassoc */
	wpas_wps_reenable_networks(wpa_s);
}

static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
{
	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
	wpa_s->wps_success = 1;
	wpas_notify_wps_event_success(wpa_s);
	if (wpa_s->current_ssid) {
		wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1);
	}
	wpa_s->extra_blacklist_count = 0;

	/*
	 * Enable the networks disabled during wpas_wps_reassoc after 10
	 * seconds. The 10 seconds timer is to allow the data connection to be
	 * formed before allowing other networks to be selected.
	 */
	eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s, NULL);

	wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
}

static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s, struct wps_event_er_ap *ap)
{
	char uuid_str[100];
	char dev_type[WPS_DEV_TYPE_BUFSIZE];

	uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
	if (ap->pri_dev_type) {
		wps_dev_type_bin2str(ap->pri_dev_type, dev_type, sizeof(dev_type));
	} else {
		dev_type[0] = '\0';
	}

	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|", uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state, ap->friendly_name ? ap->friendly_name : "", ap->manufacturer ? ap->manufacturer : "", ap->model_description ? ap->model_description : "", ap->model_name ? ap->model_name : "", ap->manufacturer_url ? ap->manufacturer_url : "", ap->model_url ? ap->model_url : "");
}

static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s, struct wps_event_er_ap *ap)
{
	char uuid_str[100];
	uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
}

static void wpa_supplicant_wps_event_er_enrollee_add(struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
{
	char uuid_str[100];
	char dev_type[WPS_DEV_TYPE_BUFSIZE];

	uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
	if (enrollee->pri_dev_type) {
		wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type, sizeof(dev_type));
	} else {
		dev_type[0] = '\0';
	}

	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s " "|%s|%s|%s|%s|%s|", uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received, enrollee->config_methods, enrollee->dev_passwd_id, dev_type, enrollee->dev_name ? enrollee->dev_name : "", enrollee->manufacturer ? enrollee->manufacturer : "", enrollee->model_name ? enrollee->model_name : "", enrollee->model_number ? enrollee->model_number : "", enrollee->serial_number ? enrollee->serial_number : "");
}

static void wpa_supplicant_wps_event_er_enrollee_remove(struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
{
	char uuid_str[100];
	uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR, uuid_str, MAC2STR(enrollee->mac_addr));
}

static void wpa_supplicant_wps_event_er_ap_settings(struct wpa_supplicant *wpa_s, struct wps_event_er_ap_settings *ap_settings)
{
	char uuid_str[100];
	char key_str[65];
	const struct wps_credential *cred = ap_settings->cred;

	key_str[0] = '\0';
	if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
		if (cred->key_len >= 8 && cred->key_len <= 64) {
			os_memcpy(key_str, cred->key, cred->key_len);
			key_str[cred->key_len] = '\0';
		}
	}

	uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
	/* Use wpa_msg_ctrl to avoid showing the key in debug log */
	wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x " "key=%s", uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len), cred->auth_type, cred->encr_type, key_str);
}

static void wpa_supplicant_wps_event_er_set_sel_reg(struct wpa_supplicant *wpa_s, struct wps_event_er_set_selected_registrar *ev)
{
	char uuid_str[100];

	uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
	switch (ev->state) {
	case WPS_ER_SET_SEL_REG_START:
		wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG "uuid=%s state=START sel_reg=%d dev_passwd_id=%u " "sel_reg_config_methods=0x%x", uuid_str, ev->sel_reg, ev->dev_passwd_id, ev->sel_reg_config_methods);
		break;
	case WPS_ER_SET_SEL_REG_DONE:
		wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG "uuid=%s state=DONE", uuid_str);
		break;
	case WPS_ER_SET_SEL_REG_FAILED:
		wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG "uuid=%s state=FAILED", uuid_str);
		break;
	}
}

static void wpa_supplicant_wps_event(void *ctx, enum wps_event event, union wps_event_data *data)
{
	struct wpa_supplicant *wpa_s = ctx;
	switch (event) {
	case WPS_EV_M2D:
		wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
		break;
	case WPS_EV_FAIL:
		wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
		break;
	case WPS_EV_SUCCESS:
		wpa_supplicant_wps_event_success(wpa_s);
		break;
	case WPS_EV_PWD_AUTH_FAIL:
#ifdef CONFIG_AP
		if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee) {
			wpa_supplicant_ap_pwd_auth_fail(wpa_s);
		}
#endif							/* CONFIG_AP */
		break;
	case WPS_EV_PBC_OVERLAP:
		break;
	case WPS_EV_PBC_TIMEOUT:
		break;
	case WPS_EV_PBC_ACTIVE:
		wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE);
		break;
	case WPS_EV_PBC_DISABLE:
		wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE);
		break;
	case WPS_EV_ER_AP_ADD:
		wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
		break;
	case WPS_EV_ER_AP_REMOVE:
		wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
		break;
	case WPS_EV_ER_ENROLLEE_ADD:
		wpa_supplicant_wps_event_er_enrollee_add(wpa_s, &data->enrollee);
		break;
	case WPS_EV_ER_ENROLLEE_REMOVE:
		wpa_supplicant_wps_event_er_enrollee_remove(wpa_s, &data->enrollee);
		break;
	case WPS_EV_ER_AP_SETTINGS:
		wpa_supplicant_wps_event_er_ap_settings(wpa_s, &data->ap_settings);
		break;
	case WPS_EV_ER_SET_SELECTED_REGISTRAR:
		wpa_supplicant_wps_event_er_set_sel_reg(wpa_s, &data->set_sel_reg);
		break;
	case WPS_EV_AP_PIN_SUCCESS:
		break;
	}
}

static int wpa_supplicant_wps_rf_band(void *ctx)
{
	struct wpa_supplicant *wpa_s = ctx;

	if (!wpa_s->current_ssid || !wpa_s->assoc_freq) {
		return 0;
	}

	return (wpa_s->assoc_freq > 50000) ? WPS_RF_60GHZ : (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ;
}

enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
{
	if (eap_is_wps_pbc_enrollee(&ssid->eap) || eap_is_wps_pin_enrollee(&ssid->eap)) {
		return WPS_REQ_ENROLLEE;
	} else {
		return WPS_REQ_REGISTRAR;
	}
}

static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
{
	int id;
	struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;

	wpa_s->after_wps = 0;
	wpa_s->known_wps_freq = 0;

	prev_current = wpa_s->current_ssid;

	/* Enable the networks disabled during wpas_wps_reassoc */
	wpas_wps_reenable_networks(wpa_s);

	eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
	eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);

	/* Remove any existing WPS network from configuration */
	ssid = wpa_s->conf->ssid;
	while (ssid) {
		if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
			if (ssid == wpa_s->current_ssid) {
				wpa_s->own_disconnect_req = 1;
				wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
			}
			id = ssid->id;
			remove_ssid = ssid;
		} else {
			id = -1;
		}
		ssid = ssid->next;
		if (id >= 0) {
			if (prev_current == remove_ssid) {
				wpa_sm_set_config(wpa_s->wpa, NULL);
				eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
			}
			wpas_notify_network_removed(wpa_s, remove_ssid);
			wpa_config_remove_network(wpa_s->conf, id);
		}
	}

	wpas_wps_clear_ap_info(wpa_s);
}

static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
{
	struct wpa_supplicant *wpa_s = eloop_ctx;
	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed " "out");
	wpas_clear_wps(wpa_s);
}

static struct wpa_ssid *wpas_wps_add_network(struct wpa_supplicant *wpa_s, int registrar, const u8 *dev_addr, const u8 *bssid)
{
	struct wpa_ssid *ssid;

	ssid = wpa_config_add_network(wpa_s->conf);
	if (ssid == NULL) {
		return NULL;
	}
	wpas_notify_network_added(wpa_s, ssid);
	wpa_config_set_network_defaults(ssid);
	ssid->temporary = 1;
	if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 || wpa_config_set(ssid, "eap", "WSC", 0) < 0 || wpa_config_set(ssid, "identity", registrar ? "\"" WSC_ID_REGISTRAR "\"" : "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
		wpas_notify_network_removed(wpa_s, ssid);
		wpa_config_remove_network(wpa_s->conf, ssid->id);
		return NULL;
	}
#ifdef CONFIG_P2P
	if (dev_addr) {
		os_memcpy(ssid->go_p2p_dev_addr, dev_addr, ETH_ALEN);
	}
#endif							/* CONFIG_P2P */

	if (bssid) {
#ifndef CONFIG_P2P
		struct wpa_bss *bss;
		int count = 0;
#endif							/* CONFIG_P2P */

		os_memcpy(ssid->bssid, bssid, ETH_ALEN);
		ssid->bssid_set = 1;

		/*
		 * Note: With P2P, the SSID may change at the time the WPS
		 * provisioning is started, so better not filter the AP based
		 * on the current SSID in the scan results.
		 */
#ifndef CONFIG_P2P
		dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
			if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0) {
				continue;
			}

			os_free(ssid->ssid);
			ssid->ssid = os_malloc(bss->ssid_len);
			if (ssid->ssid == NULL) {
				break;
			}
			os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
			ssid->ssid_len = bss->ssid_len;
			wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from " "scan results", ssid->ssid, ssid->ssid_len);
			count++;
		}

		if (count > 1) {
			wpa_printf(MSG_DEBUG, "WPS: More than one SSID found " "for the AP; use wildcard");
			os_free(ssid->ssid);
			ssid->ssid = NULL;
			ssid->ssid_len = 0;
		}
#endif							/* CONFIG_P2P */
	}

	return ssid;
}

static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s, struct wpa_ssid *selected)
{
	struct wpa_ssid *ssid;

	if (wpa_s->current_ssid) {
		wpa_s->own_disconnect_req = 1;
		wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
	}

	/* Mark all other networks disabled and trigger reassociation */
	ssid = wpa_s->conf->ssid;
	while (ssid) {
		int was_disabled = ssid->disabled;
		ssid->disabled_for_connect = 0;
		/*
		 * In case the network object corresponds to a persistent group
		 * then do not send out network disabled signal. In addition,
		 * do not change disabled status of persistent network objects
		 * from 2 to 1 should we connect to another network.
		 */
		if (was_disabled != 2) {
			ssid->disabled = ssid != selected;
			if (was_disabled != ssid->disabled) {
				if (ssid->disabled) {
					ssid->disabled_for_connect = 1;
				}
				wpas_notify_network_enabled_changed(wpa_s, ssid);
			}
		}
		ssid = ssid->next;
	}
}

static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s, struct wpa_ssid *selected, const u8 *bssid, int freq)
{
	struct wpa_bss *bss;

	wpa_s->wps_run++;
	if (wpa_s->wps_run == 0) {
		wpa_s->wps_run++;
	}
	wpa_s->after_wps = 0;
	wpa_s->known_wps_freq = 0;
	if (freq) {
		wpa_s->after_wps = 5;
		wpa_s->wps_freq = freq;
	} else if (bssid) {
		bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
		if (bss && bss->freq > 0) {
			wpa_s->known_wps_freq = 1;
			wpa_s->wps_freq = bss->freq;
		}
	}

	wpas_wps_temp_disable(wpa_s, selected);

	wpa_s->disconnected = 0;
	wpa_s->reassociate = 1;
	wpa_s->scan_runs = 0;
	wpa_s->normal_scans = 0;
	wpa_s->wps_success = 0;
	wpa_s->blacklist_cleared = 0;

	wpa_supplicant_cancel_sched_scan(wpa_s);
	wpa_supplicant_req_scan(wpa_s, 0, 0);
}

int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid, int p2p_group)
{
	struct wpa_ssid *ssid;

#ifdef CONFIG_AP
	if (wpa_s->ap_iface) {
		wpa_printf(MSG_DEBUG, "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
		return -1;
	}
#endif							/* CONFIG_AP */
	wpas_clear_wps(wpa_s);
	ssid = wpas_wps_add_network(wpa_s, 0, NULL, bssid);
	if (ssid == NULL) {
		return -1;
	}
	ssid->temporary = 1;
	ssid->p2p_group = p2p_group;
#ifdef CONFIG_P2P
	if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
		ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
		if (ssid->ssid) {
			ssid->ssid_len = wpa_s->go_params->ssid_len;
			os_memcpy(ssid->ssid, wpa_s->go_params->ssid, ssid->ssid_len);
			wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " "SSID", ssid->ssid, ssid->ssid_len);
		}
	}
#endif							/* CONFIG_P2P */
	if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0) {
		return -1;
	}
	if (wpa_s->wps_fragment_size) {
		ssid->eap.fragment_size = wpa_s->wps_fragment_size;
	}
	eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, wpa_s, NULL);
	wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
	return 0;
}

static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s, const u8 *dev_addr, const u8 *bssid, const char *pin, int p2p_group, u16 dev_pw_id, const u8 *peer_pubkey_hash, const u8 *ssid_val, size_t ssid_len, int freq)
{
	struct wpa_ssid *ssid;
	char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN];
	unsigned int rpin = 0;
	char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10];

#ifdef CONFIG_AP
	if (wpa_s->ap_iface) {
		wpa_printf(MSG_DEBUG, "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
		return -1;
	}
#endif							/* CONFIG_AP */
	wpas_clear_wps(wpa_s);
	if (bssid && is_zero_ether_addr(bssid)) {
		bssid = NULL;
	}
	ssid = wpas_wps_add_network(wpa_s, 0, dev_addr, bssid);
	if (ssid == NULL) {
		wpa_printf(MSG_DEBUG, "WPS: Could not add network");
		return -1;
	}
	ssid->temporary = 1;
	ssid->p2p_group = p2p_group;
	if (ssid_val) {
		ssid->ssid = os_malloc(ssid_len);
		if (ssid->ssid) {
			os_memcpy(ssid->ssid, ssid_val, ssid_len);
			ssid->ssid_len = ssid_len;
		}
	}
	if (peer_pubkey_hash) {
		os_memcpy(hash, " pkhash=", 8);
		wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8, peer_pubkey_hash, WPS_OOB_PUBKEY_HASH_LEN);
	} else {
		hash[0] = '\0';
	}
#ifdef CONFIG_P2P
	if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
		os_free(ssid->ssid);
		ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
		if (ssid->ssid) {
			ssid->ssid_len = wpa_s->go_params->ssid_len;
			os_memcpy(ssid->ssid, wpa_s->go_params->ssid, ssid->ssid_len);
			wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " "SSID", ssid->ssid, ssid->ssid_len);
		}
	}
#endif							/* CONFIG_P2P */
	if (pin) {
		os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"", pin, dev_pw_id, hash);
	} else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
		os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"", dev_pw_id, hash);
	} else {
		rpin = wps_generate_pin();
		os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"", rpin, dev_pw_id, hash);
	}
	if (wpa_config_set(ssid, "phase1", val, 0) < 0) {
		wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val);
		return -1;
	}
	if (wpa_s->wps_fragment_size) {
		ssid->eap.fragment_size = wpa_s->wps_fragment_size;
	}
	eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, wpa_s, NULL);
	wpa_s->wps_ap_iter = 1;
	wpas_wps_reassoc(wpa_s, ssid, bssid, freq);
	return rpin;
}

int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid, const char *pin, int p2p_group, u16 dev_pw_id)
{
	os_get_reltime(&wpa_s->wps_pin_start_time);
	return wpas_wps_start_dev_pw(wpa_s, NULL, bssid, pin, p2p_group, dev_pw_id, NULL, NULL, 0, 0);
}

/* Cancel the wps pbc/pin requests */
int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
{
#ifdef CONFIG_AP
	if (wpa_s->ap_iface) {
		wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
		return wpa_supplicant_ap_wps_cancel(wpa_s);
	}
#endif							/* CONFIG_AP */

	if (wpa_s->wpa_state == WPA_SCANNING || wpa_s->wpa_state == WPA_DISCONNECTED) {
		wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
		wpa_supplicant_cancel_scan(wpa_s);
		wpas_clear_wps(wpa_s);
	} else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
		wpa_printf(MSG_DEBUG, "WPS: Cancel operation - " "deauthenticate");
		wpa_s->own_disconnect_req = 1;
		wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
		wpas_clear_wps(wpa_s);
	} else {
		wpas_wps_reenable_networks(wpa_s);
		wpas_wps_clear_ap_info(wpa_s);
		if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) > 0) {
			wpas_clear_wps(wpa_s);
		}
	}

	wpa_s->after_wps = 0;

	return 0;
}

int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid, const char *pin, struct wps_new_ap_settings *settings)
{
	struct wpa_ssid *ssid;
	char val[200];
	char *pos, *end;
	int res;

#ifdef CONFIG_AP
	if (wpa_s->ap_iface) {
		wpa_printf(MSG_DEBUG, "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
		return -1;
	}
#endif							/* CONFIG_AP */
	if (!pin) {
		return -1;
	}
	wpas_clear_wps(wpa_s);
	ssid = wpas_wps_add_network(wpa_s, 1, NULL, bssid);
	if (ssid == NULL) {
		return -1;
	}
	ssid->temporary = 1;
	pos = val;
	end = pos + sizeof(val);
	res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
	if (os_snprintf_error(end - pos, res)) {
		return -1;
	}
	pos += res;
	if (settings) {
		res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s " "new_encr=%s new_key=%s", settings->ssid_hex, settings->auth, settings->encr, settings->key_hex);
		if (os_snprintf_error(end - pos, res)) {
			return -1;
		}
		pos += res;
	}
	res = os_snprintf(pos, end - pos, "\"");
	if (os_snprintf_error(end - pos, res)) {
		return -1;
	}
	if (wpa_config_set(ssid, "phase1", val, 0) < 0) {
		return -1;
	}
	if (wpa_s->wps_fragment_size) {
		ssid->eap.fragment_size = wpa_s->wps_fragment_size;
	}
	eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, wpa_s, NULL);
	wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
	return 0;
}

static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *p2p_dev_addr, const u8 *psk, size_t psk_len)
{
	if (is_zero_ether_addr(p2p_dev_addr)) {
		wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA " MACSTR, MAC2STR(mac_addr));
	} else {
		wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA " MACSTR " P2P Device Addr " MACSTR, MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
	}
	wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);

	/* TODO */

	return 0;
}

static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, const struct wps_device_data *dev)
{
	char uuid[40], txt[400];
	int len;
	char devtype[WPS_DEV_TYPE_BUFSIZE];
	if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) {
		return;
	}
	wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
	len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR " [%s|%s|%s|%s|%s|%s]", uuid, MAC2STR(dev->mac_addr), dev->device_name, dev->manufacturer, dev->model_name, dev->model_number, dev->serial_number, wps_dev_type_bin2str(dev->pri_dev_type, devtype, sizeof(devtype)));
	if (!os_snprintf_error(sizeof(txt), len)) {
		wpa_printf(MSG_INFO, "%s", txt);
	}
}

static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id, u16 sel_reg_config_methods)
{
#ifdef CONFIG_WPS_ER
	struct wpa_supplicant *wpa_s = ctx;

	if (wpa_s->wps_er == NULL) {
		return;
	}
	wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d " "dev_password_id=%u sel_reg_config_methods=0x%x", sel_reg, dev_passwd_id, sel_reg_config_methods);
	wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id, sel_reg_config_methods);
#endif							/* CONFIG_WPS_ER */
}

static u16 wps_fix_config_methods(u16 config_methods)
{
	if ((config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
		wpa_printf(MSG_INFO, "WPS: Converting display to " "virtual_display for WPS 2.0 compliance");
		config_methods |= WPS_CONFIG_VIRT_DISPLAY;
	}
	if ((config_methods & (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
		wpa_printf(MSG_INFO, "WPS: Converting push_button to " "virtual_push_button for WPS 2.0 compliance");
		config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
	}

	return config_methods;
}

static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s, struct wps_context *wps)
{
	char buf[50];
	const char *src;

	if (is_nil_uuid(wpa_s->conf->uuid)) {
		struct wpa_supplicant *first;
		first = wpa_s->global->ifaces;
		while (first && first->next) {
			first = first->next;
		}
		if (first && first != wpa_s) {
			if (wps != wpa_s->global->ifaces->wps) {
				os_memcpy(wps->uuid, wpa_s->global->ifaces->wps->uuid, WPS_UUID_LEN);
			}
			src = "from the first interface";
		} else {
			uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
			src = "based on MAC address";
		}
	} else {
		os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
		src = "based on configuration";
	}

	uuid_bin2str(wps->uuid, buf, sizeof(buf));
	wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
}

static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s, struct wps_context *wps)
{
	wpabuf_free(wps->dev.vendor_ext_m1);
	wps->dev.vendor_ext_m1 = NULL;

	if (wpa_s->conf->wps_vendor_ext_m1) {
		wps->dev.vendor_ext_m1 = wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
		if (!wps->dev.vendor_ext_m1) {
			wpa_printf(MSG_ERROR, "WPS: Cannot " "allocate memory for vendor_ext_m1");
		}
	}
}

int wpas_wps_init(struct wpa_supplicant *wpa_s)
{
	struct wps_context *wps;
	struct wps_registrar_config rcfg;
	struct hostapd_hw_modes *modes;
	u16 m;

	wps = os_zalloc(sizeof(*wps));
	if (wps == NULL) {
		return -1;
	}

	wps->cred_cb = wpa_supplicant_wps_cred;
	wps->event_cb = wpa_supplicant_wps_event;
	wps->rf_band_cb = wpa_supplicant_wps_rf_band;
	wps->cb_ctx = wpa_s;

	wps->dev.device_name = wpa_s->conf->device_name;
	wps->dev.manufacturer = wpa_s->conf->manufacturer;
	wps->dev.model_name = wpa_s->conf->model_name;
	wps->dev.model_number = wpa_s->conf->model_number;
	wps->dev.serial_number = wpa_s->conf->serial_number;
	wps->config_methods = wps_config_methods_str2bin(wpa_s->conf->config_methods);
	if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
		wpa_printf(MSG_ERROR, "WPS: Both Label and Display config " "methods are not allowed at the same time");
		os_free(wps);
		return -1;
	}
	wps->config_methods = wps_fix_config_methods(wps->config_methods);
	wps->dev.config_methods = wps->config_methods;
	os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, WPS_DEV_TYPE_LEN);

	wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
	os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);

	wpas_wps_set_vendor_ext_m1(wpa_s, wps);

	wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
	modes = wpa_s->hw.modes;
	if (modes) {
		for (m = 0; m < wpa_s->hw.num_modes; m++) {
			if (modes[m].mode == HOSTAPD_MODE_IEEE80211B || modes[m].mode == HOSTAPD_MODE_IEEE80211G) {
				wps->dev.rf_bands |= WPS_RF_24GHZ;
			} else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A) {
				wps->dev.rf_bands |= WPS_RF_50GHZ;
			} else if (modes[m].mode == HOSTAPD_MODE_IEEE80211AD) {
				wps->dev.rf_bands |= WPS_RF_60GHZ;
			}
		}
	}
	if (wps->dev.rf_bands == 0) {
		/*
		 * Default to claiming support for both bands if the driver
		 * does not provide support for fetching supported bands.
		 */
		wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
	}
	os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
	wpas_wps_set_uuid(wpa_s, wps);

	wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
	wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;

	os_memset(&rcfg, 0, sizeof(rcfg));
	rcfg.new_psk_cb = wpas_wps_new_psk_cb;
	rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
	rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
	rcfg.cb_ctx = wpa_s;

	wps->registrar = wps_registrar_init(wps, &rcfg);
	if (wps->registrar == NULL) {
		wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
		os_free(wps);
		return -1;
	}

	wpa_s->wps = wps;

	return 0;
}

#ifdef CONFIG_WPS_ER
static void wpas_wps_nfc_clear(struct wps_context *wps)
{
	wps->ap_nfc_dev_pw_id = 0;
	wpabuf_free(wps->ap_nfc_dh_pubkey);
	wps->ap_nfc_dh_pubkey = NULL;
	wpabuf_free(wps->ap_nfc_dh_privkey);
	wps->ap_nfc_dh_privkey = NULL;
	wpabuf_free(wps->ap_nfc_dev_pw);
	wps->ap_nfc_dev_pw = NULL;
}
#endif							/* CONFIG_WPS_ER */

void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
{
	wpas_wps_assoc_with_cred_cancel(wpa_s);
	eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
	eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
	eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
	wpas_wps_clear_ap_info(wpa_s);

#ifdef CONFIG_P2P
	eloop_cancel_timeout(wpas_p2p_pbc_overlap_cb, wpa_s, NULL);
#endif							/* CONFIG_P2P */

	if (wpa_s->wps == NULL) {
		return;
	}

#ifdef CONFIG_WPS_ER
	wps_er_deinit(wpa_s->wps_er, NULL, NULL);
	wpa_s->wps_er = NULL;
	wpas_wps_nfc_clear(wpa_s->wps);
#endif							/* CONFIG_WPS_ER */

	wps_registrar_deinit(wpa_s->wps->registrar);
	wpabuf_free(wpa_s->wps->dh_pubkey);
	wpabuf_free(wpa_s->wps->dh_privkey);
	wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
	os_free(wpa_s->wps->network_key);
	os_free(wpa_s->wps);
	wpa_s->wps = NULL;
}

int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, struct wpa_bss *bss)
{
	struct wpabuf *wps_ie;

	if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
		return -1;
	}

	wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
	if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
		if (!wps_ie) {
			wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
			return 0;
		}

		if (!wps_is_selected_pbc_registrar(wps_ie)) {
			wpa_printf(MSG_DEBUG, "   skip - WPS AP " "without active PBC Registrar");
			wpabuf_free(wps_ie);
			return 0;
		}

		/* TODO: overlap detection */
		wpa_printf(MSG_DEBUG, "   selected based on WPS IE " "(Active PBC)");
		wpabuf_free(wps_ie);
		return 1;
	}

	if (eap_is_wps_pin_enrollee(&ssid->eap)) {
		if (!wps_ie) {
			wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
			return 0;
		}

		/*
		 * Start with WPS APs that advertise our address as an
		 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
		 * allow any WPS AP after couple of scans since some APs do not
		 * set Selected Registrar attribute properly when using
		 * external Registrar.
		 */
		if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
			struct os_reltime age;

			os_reltime_age(&wpa_s->wps_pin_start_time, &age);

			if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG || age.sec < WPS_PIN_TIME_IGNORE_SEL_REG) {
				wpa_printf(MSG_DEBUG, "   skip - WPS AP without active PIN Registrar (scan_runs=%d age=%d)", wpa_s->scan_runs, (int)age.sec);
				wpabuf_free(wps_ie);
				return 0;
			}
			wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
		} else {
			wpa_printf(MSG_DEBUG, "   selected based on WPS IE " "(Authorized MAC or Active PIN)");
		}
		wpabuf_free(wps_ie);
		return 1;
	}

	if (wps_ie) {
		wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
		wpabuf_free(wps_ie);
		return 1;
	}

	return -1;
}

int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, struct wpa_bss *bss)
{
	struct wpabuf *wps_ie = NULL;
	int ret = 0;

	if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
		wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
		if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
			/* allow wildcard SSID for WPS PBC */
			ret = 1;
		}
	} else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
		wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
		if (wps_ie && (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) || wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
			/* allow wildcard SSID for WPS PIN */
			ret = 1;
		}
	}

	if (!ret && ssid->bssid_set && os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
		/* allow wildcard SSID due to hardcoded BSSID match */
		ret = 1;
	}
#ifdef CONFIG_WPS_STRICT
	if (wps_ie) {
		if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len > 0, bss->bssid) < 0) {
			ret = 0;
		}
		if (bss->beacon_ie_len) {
			struct wpabuf *bcn_wps;
			bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(bss, WPS_IE_VENDOR_TYPE);
			if (bcn_wps == NULL) {
				wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE " "missing from AP Beacon");
				ret = 0;
			} else {
				if (wps_validate_beacon(wps_ie) < 0) {
					ret = 0;
				}
				wpabuf_free(bcn_wps);
			}
		}
	}
#endif							/* CONFIG_WPS_STRICT */

	wpabuf_free(wps_ie);

	return ret;
}

int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s, struct wpa_bss *selected, struct wpa_ssid *ssid)
{
	const u8 *sel_uuid;
	struct wpabuf *wps_ie;
	int ret = 0;
	size_t i;

	if (!eap_is_wps_pbc_enrollee(&ssid->eap)) {
		return 0;
	}

	wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is " "present in scan results; selected BSSID " MACSTR, MAC2STR(selected->bssid));

	/* Make sure that only one AP is in active PBC mode */
	wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
	if (wps_ie) {
		sel_uuid = wps_get_uuid_e(wps_ie);
		wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS", sel_uuid, UUID_LEN);
	} else {
		wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include " "WPS IE?!");
		sel_uuid = NULL;
	}

	for (i = 0; i < wpa_s->num_wps_ap; i++) {
		struct wps_ap_info *ap = &wpa_s->wps_ap[i];

		if (!ap->pbc_active || os_memcmp(selected->bssid, ap->bssid, ETH_ALEN) == 0) {
			continue;
		}

		wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: " MACSTR, MAC2STR(ap->bssid));
		wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS", ap->uuid, UUID_LEN);
		if (sel_uuid == NULL || os_memcmp(sel_uuid, ap->uuid, UUID_LEN) != 0) {
			ret = 1;			/* PBC overlap */
			wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: " MACSTR " and " MACSTR, MAC2STR(selected->bssid), MAC2STR(ap->bssid));
			break;
		}

		/* TODO: verify that this is reasonable dual-band situation */
	}

	wpabuf_free(wps_ie);

	return ret;
}

void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
{
	struct wpa_bss *bss;
	unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;

	if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED) {
		return;
	}

	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
		struct wpabuf *ie;
		ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
		if (!ie) {
			continue;
		}
		if (wps_is_selected_pbc_registrar(ie)) {
			pbc++;
		} else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0)) {
			auth++;
		} else if (wps_is_selected_pin_registrar(ie)) {
			pin++;
		} else {
			wps++;
		}
		wpabuf_free(ie);
	}

	if (pbc) {
		wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
	} else if (auth) {
		wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
	} else if (pin) {
		wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
	} else if (wps) {
		wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
	}
}

int wpas_wps_searching(struct wpa_supplicant *wpa_s)
{
	struct wpa_ssid *ssid;

	for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
		if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled) {
			return 1;
		}
	}

	return 0;
}

int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
{
	struct wpabuf *wps_ie;
	int ret;

	wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
	if (wps_ie == NULL) {
		return 0;
	}

	ret = wps_attr_text(wps_ie, buf, end);
	wpabuf_free(wps_ie);
	return ret;
}

int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
{
#ifdef CONFIG_WPS_ER
	if (wpa_s->wps_er) {
		wps_er_refresh(wpa_s->wps_er);
		return 0;
	}
	wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
	if (wpa_s->wps_er == NULL) {
		return -1;
	}
	return 0;
#else							/* CONFIG_WPS_ER */
	return 0;
#endif							/* CONFIG_WPS_ER */
}

void wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
{
#ifdef CONFIG_WPS_ER
	wps_er_deinit(wpa_s->wps_er, NULL, NULL);
	wpa_s->wps_er = NULL;
#endif							/* CONFIG_WPS_ER */
}

#ifdef CONFIG_WPS_ER
int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr, const char *uuid, const char *pin)
{
	u8 u[UUID_LEN];
	const u8 *use_uuid = NULL;
	u8 addr_buf[ETH_ALEN];

	if (os_strcmp(uuid, "any") == 0) {
	} else if (uuid_str2bin(uuid, u) == 0) {
		use_uuid = u;
	} else if (hwaddr_aton(uuid, addr_buf) == 0) {
		use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
		if (use_uuid == NULL) {
			return -1;
		}
	} else {
		return -1;
	}
	return wps_registrar_add_pin(wpa_s->wps->registrar, addr, use_uuid, (const u8 *)pin, os_strlen(pin), 300);
}

int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
{
	u8 u[UUID_LEN], *use_uuid = NULL;
	u8 addr[ETH_ALEN], *use_addr = NULL;

	if (uuid_str2bin(uuid, u) == 0) {
		use_uuid = u;
	} else if (hwaddr_aton(uuid, addr) == 0) {
		use_addr = addr;
	} else {
		return -1;
	}
	return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
}

int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid, const char *pin)
{
	u8 u[UUID_LEN], *use_uuid = NULL;
	u8 addr[ETH_ALEN], *use_addr = NULL;

	if (uuid_str2bin(uuid, u) == 0) {
		use_uuid = u;
	} else if (hwaddr_aton(uuid, addr) == 0) {
		use_addr = addr;
	} else {
		return -1;
	}

	return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *)pin, os_strlen(pin));
}

static int wpas_wps_network_to_cred(struct wpa_ssid *ssid, struct wps_credential *cred)
{
	os_memset(cred, 0, sizeof(*cred));
	if (ssid->ssid_len > SSID_MAX_LEN) {
		return -1;
	}
	os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
	cred->ssid_len = ssid->ssid_len;
	if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
		cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ? WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
		if (ssid->pairwise_cipher & WPA_CIPHER_CCMP) {
			cred->encr_type = WPS_ENCR_AES;
		} else {
			cred->encr_type = WPS_ENCR_TKIP;
		}
		if (ssid->passphrase) {
			cred->key_len = os_strlen(ssid->passphrase);
			if (cred->key_len >= 64) {
				return -1;
			}
			os_memcpy(cred->key, ssid->passphrase, cred->key_len);
		} else if (ssid->psk_set) {
			cred->key_len = 32;
			os_memcpy(cred->key, ssid->psk, 32);
		} else {
			return -1;
		}
	} else {
		cred->auth_type = WPS_AUTH_OPEN;
		cred->encr_type = WPS_ENCR_NONE;
	}

	return 0;
}

int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid, int id)
{
	u8 u[UUID_LEN], *use_uuid = NULL;
	u8 addr[ETH_ALEN], *use_addr = NULL;
	struct wpa_ssid *ssid;
	struct wps_credential cred;
	int ret;

	if (uuid_str2bin(uuid, u) == 0) {
		use_uuid = u;
	} else if (hwaddr_aton(uuid, addr) == 0) {
		use_addr = addr;
	} else {
		return -1;
	}
	ssid = wpa_config_get_network(wpa_s->conf, id);
	if (ssid == NULL || ssid->ssid == NULL) {
		return -1;
	}

	if (wpas_wps_network_to_cred(ssid, &cred) < 0) {
		return -1;
	}
	ret = wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
	os_memset(&cred, 0, sizeof(cred));
	return ret;
}

int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid, const char *pin, struct wps_new_ap_settings *settings)
{
	u8 u[UUID_LEN], *use_uuid = NULL;
	u8 addr[ETH_ALEN], *use_addr = NULL;
	struct wps_credential cred;
	size_t len;

	if (uuid_str2bin(uuid, u) == 0) {
		use_uuid = u;
	} else if (hwaddr_aton(uuid, addr) == 0) {
		use_addr = addr;
	} else {
		return -1;
	}
	if (settings->ssid_hex == NULL || settings->auth == NULL || settings->encr == NULL || settings->key_hex == NULL) {
		return -1;
	}

	os_memset(&cred, 0, sizeof(cred));
	len = os_strlen(settings->ssid_hex);
	if ((len & 1) || len > 2 * sizeof(cred.ssid) || hexstr2bin(settings->ssid_hex, cred.ssid, len / 2)) {
		return -1;
	}
	cred.ssid_len = len / 2;

	len = os_strlen(settings->key_hex);
	if ((len & 1) || len > 2 * sizeof(cred.key) || hexstr2bin(settings->key_hex, cred.key, len / 2)) {
		return -1;
	}
	cred.key_len = len / 2;

	if (os_strcmp(settings->auth, "OPEN") == 0) {
		cred.auth_type = WPS_AUTH_OPEN;
	} else if (os_strcmp(settings->auth, "WPAPSK") == 0) {
		cred.auth_type = WPS_AUTH_WPAPSK;
	} else if (os_strcmp(settings->auth, "WPA2PSK") == 0) {
		cred.auth_type = WPS_AUTH_WPA2PSK;
	} else {
		return -1;
	}

	if (os_strcmp(settings->encr, "NONE") == 0) {
		cred.encr_type = WPS_ENCR_NONE;
	}
#ifdef CONFIG_TESTING_OPTIONS
	else if (os_strcmp(settings->encr, "WEP") == 0) {
		cred.encr_type = WPS_ENCR_WEP;
	}
#endif							/* CONFIG_TESTING_OPTIONS */
	else if (os_strcmp(settings->encr, "TKIP") == 0) {
		cred.encr_type = WPS_ENCR_TKIP;
	} else if (os_strcmp(settings->encr, "CCMP") == 0) {
		cred.encr_type = WPS_ENCR_AES;
	} else {
		return -1;
	}

	return wps_er_config(wpa_s->wps_er, use_uuid, use_addr, (const u8 *)pin, os_strlen(pin), &cred);
}

#ifdef CONFIG_WPS_NFC
struct wpabuf *wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s, int ndef, const char *uuid)
{
	struct wpabuf *ret;
	u8 u[UUID_LEN], *use_uuid = NULL;
	u8 addr[ETH_ALEN], *use_addr = NULL;

	if (!wpa_s->wps_er) {
		return NULL;
	}

	if (uuid_str2bin(uuid, u) == 0) {
		use_uuid = u;
	} else if (hwaddr_aton(uuid, addr) == 0) {
		use_addr = addr;
	} else {
		return NULL;
	}

	ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
	if (ndef && ret) {
		struct wpabuf *tmp;
		tmp = ndef_build_wifi(ret);
		wpabuf_free(ret);
		if (tmp == NULL) {
			return NULL;
		}
		ret = tmp;
	}

	return ret;
}
#endif							/* CONFIG_WPS_NFC */

static int callbacks_pending = 0;

static void wpas_wps_terminate_cb(void *ctx)
{
	wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
	if (--callbacks_pending <= 0) {
		eloop_terminate();
	}
}
#endif							/* CONFIG_WPS_ER */

int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
{
#ifdef CONFIG_WPS_ER
	if (wpa_s->wps_er) {
		callbacks_pending++;
		wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
		wpa_s->wps_er = NULL;
		return 1;
	}
#endif							/* CONFIG_WPS_ER */
	return 0;
}

void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
{
	struct wps_context *wps = wpa_s->wps;

	if (wps == NULL) {
		return;
	}

	if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
		wps->config_methods = wps_config_methods_str2bin(wpa_s->conf->config_methods);
		if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
			wpa_printf(MSG_ERROR, "WPS: Both Label and Display " "config methods are not allowed at the " "same time");
			wps->config_methods &= ~WPS_CONFIG_LABEL;
		}
	}
	wps->config_methods = wps_fix_config_methods(wps->config_methods);
	wps->dev.config_methods = wps->config_methods;

	if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) {
		os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, WPS_DEV_TYPE_LEN);
	}

	if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
		wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
		os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
	}

	if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
		wpas_wps_set_vendor_ext_m1(wpa_s, wps);
	}

	if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION) {
		wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
	}

	if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) {
		wpas_wps_set_uuid(wpa_s, wps);
	}

	if (wpa_s->conf->changed_parameters & (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
		/* Update pointers to make sure they refer current values */
		wps->dev.device_name = wpa_s->conf->device_name;
		wps->dev.manufacturer = wpa_s->conf->manufacturer;
		wps->dev.model_name = wpa_s->conf->model_name;
		wps->dev.model_number = wpa_s->conf->model_number;
		wps->dev.serial_number = wpa_s->conf->serial_number;
	}
}

#ifdef CONFIG_WPS_NFC

#ifdef CONFIG_WPS_ER
static struct wpabuf *wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef, struct wpa_ssid *ssid)
{
	struct wpabuf *ret;
	struct wps_credential cred;

	if (wpas_wps_network_to_cred(ssid, &cred) < 0) {
		return NULL;
	}

	ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);

	if (ndef && ret) {
		struct wpabuf *tmp;
		tmp = ndef_build_wifi(ret);
		wpabuf_free(ret);
		if (tmp == NULL) {
			return NULL;
		}
		ret = tmp;
	}

	return ret;
}
#endif							/* CONFIG_WPS_ER */

struct wpabuf *wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s, int ndef, const char *id_str)
{
#ifdef CONFIG_WPS_ER
	if (id_str) {
		int id;
		char *end = NULL;
		struct wpa_ssid *ssid;

		id = strtol(id_str, &end, 10);
		if (end && *end) {
			return NULL;
		}

		ssid = wpa_config_get_network(wpa_s->conf, id);
		if (ssid == NULL) {
			return NULL;
		}
		return wpas_wps_network_config_token(wpa_s, ndef, ssid);
	}
#endif							/* CONFIG_WPS_ER */
#ifdef CONFIG_AP
	if (wpa_s->ap_iface) {
		return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
	}
#endif							/* CONFIG_AP */
	return NULL;
}

struct wpabuf *wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
{
	if (wpa_s->conf->wps_nfc_pw_from_config) {
		return wps_nfc_token_build(ndef, wpa_s->conf->wps_nfc_dev_pw_id, wpa_s->conf->wps_nfc_dh_pubkey, wpa_s->conf->wps_nfc_dev_pw);
	}

	return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id, &wpa_s->conf->wps_nfc_dh_pubkey, &wpa_s->conf->wps_nfc_dh_privkey, &wpa_s->conf->wps_nfc_dev_pw);
}

int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *go_dev_addr, const u8 *bssid, const struct wpabuf *dev_pw, u16 dev_pw_id, int p2p_group, const u8 *peer_pubkey_hash, const u8 *ssid, size_t ssid_len, int freq)
{
	struct wps_context *wps = wpa_s->wps;
	char pw[32 * 2 + 1];

	if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
		dev_pw = wpa_s->conf->wps_nfc_dev_pw;
		dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
	}

	if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || wpa_s->conf->wps_nfc_dh_privkey == NULL) {
		wpa_printf(MSG_DEBUG, "WPS: Missing DH params - " "cannot start NFC-triggered connection");
		return -1;
	}

	if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
		wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - " "cannot start NFC-triggered connection", dev_pw_id);
		return -1;
	}

	dh5_free(wps->dh_ctx);
	wpabuf_free(wps->dh_pubkey);
	wpabuf_free(wps->dh_privkey);
	wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
	wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
	if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
		wps->dh_ctx = NULL;
		wpabuf_free(wps->dh_pubkey);
		wps->dh_pubkey = NULL;
		wpabuf_free(wps->dh_privkey);
		wps->dh_privkey = NULL;
		wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key");
		return -1;
	}
	wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
	if (wps->dh_ctx == NULL) {
		wpabuf_free(wps->dh_pubkey);
		wps->dh_pubkey = NULL;
		wpabuf_free(wps->dh_privkey);
		wps->dh_privkey = NULL;
		wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context");
		return -1;
	}

	if (dev_pw) {
		wpa_snprintf_hex_uppercase(pw, sizeof(pw), wpabuf_head(dev_pw), wpabuf_len(dev_pw));
	}
	return wpas_wps_start_dev_pw(wpa_s, go_dev_addr, bssid, dev_pw ? pw : NULL, p2p_group, dev_pw_id, peer_pubkey_hash, ssid, ssid_len, freq);
}

static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s, struct wps_parse_attr *attr)
{
	/*
	 * Disable existing networks temporarily to allow the newly learned
	 * credential to be preferred. Enable the temporarily disabled networks
	 * after 10 seconds.
	 */
	wpas_wps_temp_disable(wpa_s, NULL);
	eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s, NULL);

	if (wps_oob_use_cred(wpa_s->wps, attr) < 0) {
		return -1;
	}

	if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
		return 0;
	}

	if (attr->ap_channel) {
		u16 chan = WPA_GET_BE16(attr->ap_channel);
		int freq = 0;

		if (chan >= 1 && chan <= 13) {
			freq = 2407 + 5 * chan;
		} else if (chan == 14) {
			freq = 2484;
		} else if (chan >= 30) {
			freq = 5000 + 5 * chan;
		}

		if (freq) {
			wpa_printf(MSG_DEBUG, "WPS: Credential container indicated AP channel %u -> %u MHz", chan, freq);
			wpa_s->after_wps = 5;
			wpa_s->wps_freq = freq;
		}
	}

	wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network " "based on the received credential added");
	wpa_s->normal_scans = 0;
	wpa_supplicant_reinit_autoscan(wpa_s);
	wpa_s->disconnected = 0;
	wpa_s->reassociate = 1;

	wpa_supplicant_cancel_sched_scan(wpa_s);
	wpa_supplicant_req_scan(wpa_s, 0, 0);

	return 0;
}

#ifdef CONFIG_WPS_ER
static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s, struct wps_parse_attr *attr)
{
	return wps_registrar_add_nfc_password_token(wpa_s->wps->registrar, attr->oob_dev_password, attr->oob_dev_password_len);
}
#endif							/* CONFIG_WPS_ER */

static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s, const struct wpabuf *wps)
{
	struct wps_parse_attr attr;

	wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);

	if (wps_parse_msg(wps, &attr)) {
		wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
		return -1;
	}

	if (attr.num_cred) {
		return wpas_wps_use_cred(wpa_s, &attr);
	}

#ifdef CONFIG_WPS_ER
	if (attr.oob_dev_password) {
		return wpas_wps_add_nfc_password_token(wpa_s, &attr);
	}
#endif							/* CONFIG_WPS_ER */

	wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
	return -1;
}

int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s, const struct wpabuf *data, int forced_freq)
{
	const struct wpabuf *wps = data;
	struct wpabuf *tmp = NULL;
	int ret;

	if (wpabuf_len(data) < 4) {
		return -1;
	}

	if (*wpabuf_head_u8(data) != 0x10) {
		/* Assume this contains full NDEF record */
		tmp = ndef_parse_wifi(data);
		if (tmp == NULL) {
#ifdef CONFIG_P2P
			tmp = ndef_parse_p2p(data);
			if (tmp) {
				ret = wpas_p2p_nfc_tag_process(wpa_s, tmp, forced_freq);
				wpabuf_free(tmp);
				return ret;
			}
#endif							/* CONFIG_P2P */
			wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
			return -1;
		}
		wps = tmp;
	}

	ret = wpas_wps_nfc_tag_process(wpa_s, wps);
	wpabuf_free(tmp);
	return ret;
}

struct wpabuf *wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int ndef)
{
	struct wpabuf *ret;

	if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
		return NULL;
	}

	ret = wps_build_nfc_handover_req(wpa_s->wps, wpa_s->conf->wps_nfc_dh_pubkey);

	if (ndef && ret) {
		struct wpabuf *tmp;
		tmp = ndef_build_wifi(ret);
		wpabuf_free(ret);
		if (tmp == NULL) {
			return NULL;
		}
		ret = tmp;
	}

	return ret;
}

#ifdef CONFIG_WPS_NFC

static struct wpabuf *wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef, const char *uuid)
{
#ifdef CONFIG_WPS_ER
	struct wpabuf *ret;
	u8 u[UUID_LEN], *use_uuid = NULL;
	u8 addr[ETH_ALEN], *use_addr = NULL;
	struct wps_context *wps = wpa_s->wps;

	if (wps == NULL) {
		return NULL;
	}

	if (uuid == NULL) {
		return NULL;
	}
	if (uuid_str2bin(uuid, u) == 0) {
		use_uuid = u;
	} else if (hwaddr_aton(uuid, addr) == 0) {
		use_addr = addr;
	} else {
		return NULL;
	}

	if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) {
		if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
			return NULL;
		}
	}

	wpas_wps_nfc_clear(wps);
	wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
	wps->ap_nfc_dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
	wps->ap_nfc_dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
	if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
		wpas_wps_nfc_clear(wps);
		return NULL;
	}

	ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid, use_addr, wpa_s->conf->wps_nfc_dh_pubkey);
	if (ndef && ret) {
		struct wpabuf *tmp;
		tmp = ndef_build_wifi(ret);
		wpabuf_free(ret);
		if (tmp == NULL) {
			return NULL;
		}
		ret = tmp;
	}

	return ret;
#else							/* CONFIG_WPS_ER */
	return NULL;
#endif							/* CONFIG_WPS_ER */
}
#endif							/* CONFIG_WPS_NFC */

struct wpabuf *wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef, int cr, const char *uuid)
{
	struct wpabuf *ret;
	if (!cr) {
		return NULL;
	}
	ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
	if (ret) {
		return ret;
	}
	return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
}

static int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s, const struct wpabuf *data)
{
	struct wpabuf *wps;
	int ret = -1;
	u16 wsc_len;
	const u8 *pos;
	struct wpabuf msg;
	struct wps_parse_attr attr;
	u16 dev_pw_id;
	const u8 *bssid = NULL;
	int freq = 0;

	wps = ndef_parse_wifi(data);
	if (wps == NULL) {
		return -1;
	}
	wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " "payload from NFC connection handover");
	wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
	if (wpabuf_len(wps) < 2) {
		wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select " "Message");
		goto out;
	}
	pos = wpabuf_head(wps);
	wsc_len = WPA_GET_BE16(pos);
	if (wsc_len > wpabuf_len(wps) - 2) {
		wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " "in Wi-Fi Handover Select Message", wsc_len);
		goto out;
	}
	pos += 2;

	wpa_hexdump(MSG_DEBUG, "WPS: WSC attributes in Wi-Fi Handover Select Message", pos, wsc_len);
	if (wsc_len < wpabuf_len(wps) - 2) {
		wpa_hexdump(MSG_DEBUG, "WPS: Ignore extra data after WSC attributes", pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
	}

	wpabuf_set(&msg, pos, wsc_len);
	ret = wps_parse_msg(&msg, &attr);
	if (ret < 0) {
		wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " "Wi-Fi Handover Select Message");
		goto out;
	}

	if (attr.oob_dev_password == NULL || attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
		wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " "included in Wi-Fi Handover Select Message");
		ret = -1;
		goto out;
	}

	if (attr.ssid == NULL) {
		wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover " "Select Message");
		ret = -1;
		goto out;
	}

	wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len);

	if (attr.mac_addr) {
		bssid = attr.mac_addr;
		wpa_printf(MSG_DEBUG, "WPS: MAC Address (BSSID): " MACSTR, MAC2STR(bssid));
	}

	if (attr.rf_bands) {
		wpa_printf(MSG_DEBUG, "WPS: RF Bands: %d", *attr.rf_bands);
	}

	if (attr.ap_channel) {
		u16 chan = WPA_GET_BE16(attr.ap_channel);

		wpa_printf(MSG_DEBUG, "WPS: AP Channel: %d", chan);

		if (chan >= 1 && chan <= 13 && (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ)) {
			freq = 2407 + 5 * chan;
		} else if (chan == 14 && (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ)) {
			freq = 2484;
		} else if (chan >= 30 && (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_50GHZ)) {
			freq = 5000 + 5 * chan;
		} else if (chan >= 1 && chan <= 4 && (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_60GHZ)) {
			freq = 56160 + 2160 * chan;
		}

		if (freq) {
			wpa_printf(MSG_DEBUG, "WPS: AP indicated channel %u -> %u MHz", chan, freq);
		}
	}

	wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", attr.oob_dev_password, attr.oob_dev_password_len);
	dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + WPS_OOB_PUBKEY_HASH_LEN);
	if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
		wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " "%u in Wi-Fi Handover Select Message", dev_pw_id);
		ret = -1;
		goto out;
	}
	wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash", attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);

	ret = wpas_wps_start_nfc(wpa_s, NULL, bssid, NULL, dev_pw_id, 0, attr.oob_dev_password, attr.ssid, attr.ssid_len, freq);

out:
	wpabuf_free(wps);
	return ret;
}

int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s, const struct wpabuf *req, const struct wpabuf *sel)
{
	wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
	wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
	wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
	return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
}

int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s, const struct wpabuf *req, const struct wpabuf *sel)
{
	struct wpabuf *wps;
	int ret = -1;
	u16 wsc_len;
	const u8 *pos;
	struct wpabuf msg;
	struct wps_parse_attr attr;
	u16 dev_pw_id;

	/*
	 * Enrollee/station is always initiator of the NFC connection handover,
	 * so use the request message here to find Enrollee public key hash.
	 */
	wps = ndef_parse_wifi(req);
	if (wps == NULL) {
		return -1;
	}
	wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " "payload from NFC connection handover");
	wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
	if (wpabuf_len(wps) < 2) {
		wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request " "Message");
		goto out;
	}
	pos = wpabuf_head(wps);
	wsc_len = WPA_GET_BE16(pos);
	if (wsc_len > wpabuf_len(wps) - 2) {
		wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " "in rt Wi-Fi Handover Request Message", wsc_len);
		goto out;
	}
	pos += 2;

	wpa_hexdump(MSG_DEBUG, "WPS: WSC attributes in Wi-Fi Handover Request Message", pos, wsc_len);
	if (wsc_len < wpabuf_len(wps) - 2) {
		wpa_hexdump(MSG_DEBUG, "WPS: Ignore extra data after WSC attributes", pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
	}

	wpabuf_set(&msg, pos, wsc_len);
	ret = wps_parse_msg(&msg, &attr);
	if (ret < 0) {
		wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " "Wi-Fi Handover Request Message");
		goto out;
	}

	if (attr.oob_dev_password == NULL || attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
		wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " "included in Wi-Fi Handover Request Message");
		ret = -1;
		goto out;
	}

	if (attr.uuid_e == NULL) {
		wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi " "Handover Request Message");
		ret = -1;
		goto out;
	}

	wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);

	wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", attr.oob_dev_password, attr.oob_dev_password_len);
	dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + WPS_OOB_PUBKEY_HASH_LEN);
	if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
		wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " "%u in Wi-Fi Handover Request Message", dev_pw_id);
		ret = -1;
		goto out;
	}
	wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash", attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);

	ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar, attr.oob_dev_password, DEV_PW_NFC_CONNECTION_HANDOVER, NULL, 0, 1);

out:
	wpabuf_free(wps);
	return ret;
}

#endif							/* CONFIG_WPS_NFC */

static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
{
	size_t i;
	struct os_reltime now;

	if (wpa_debug_level > MSG_DEBUG) {
		return;
	}

	if (wpa_s->wps_ap == NULL) {
		return;
	}

	os_get_reltime(&now);

	for (i = 0; i < wpa_s->num_wps_ap; i++) {
		struct wps_ap_info *ap = &wpa_s->wps_ap[i];
		struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);

		wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d " "tries=%d last_attempt=%d sec ago blacklist=%d", (int)i, MAC2STR(ap->bssid), ap->type, ap->tries, ap->last_attempt.sec > 0 ? (int)now.sec - (int)ap->last_attempt.sec : -1, e ? e->count : 0);
	}
}

static struct wps_ap_info *wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s, const u8 *bssid)
{
	size_t i;

	if (wpa_s->wps_ap == NULL) {
		return NULL;
	}

	for (i = 0; i < wpa_s->num_wps_ap; i++) {
		struct wps_ap_info *ap = &wpa_s->wps_ap[i];
		if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0) {
			return ap;
		}
	}

	return NULL;
}

static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s, struct wpa_scan_res *res)
{
	struct wpabuf *wps;
	enum wps_ap_info_type type;
	struct wps_ap_info *ap;
	int r, pbc_active;
	const u8 *uuid;

	if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL) {
		return;
	}

	wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
	if (wps == NULL) {
		return;
	}

	r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
	if (r == 2) {
		type = WPS_AP_SEL_REG_OUR;
	} else if (r == 1) {
		type = WPS_AP_SEL_REG;
	} else {
		type = WPS_AP_NOT_SEL_REG;
	}

	uuid = wps_get_uuid_e(wps);
	pbc_active = wps_is_selected_pbc_registrar(wps);

	ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
	if (ap) {
		if (ap->type != type) {
			wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " changed type %d -> %d", MAC2STR(res->bssid), ap->type, type);
			ap->type = type;
			if (type != WPS_AP_NOT_SEL_REG) {
				wpa_blacklist_del(wpa_s, ap->bssid);
			}
		}
		ap->pbc_active = pbc_active;
		if (uuid) {
			os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
		}
		goto out;
	}

	ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1, sizeof(struct wps_ap_info));
	if (ap == NULL) {
		goto out;
	}

	wpa_s->wps_ap = ap;
	ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
	wpa_s->num_wps_ap++;

	os_memset(ap, 0, sizeof(*ap));
	os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
	ap->type = type;
	ap->pbc_active = pbc_active;
	if (uuid) {
		os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
	}
	wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added", MAC2STR(ap->bssid), ap->type);

out:
	wpabuf_free(wps);
}

void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res)
{
	size_t i;

	for (i = 0; i < scan_res->num; i++) {
		wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
	}

	wpas_wps_dump_ap_info(wpa_s);
}

void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
{
	struct wps_ap_info *ap;

	wpa_s->after_wps = 0;

	if (!wpa_s->wps_ap_iter) {
		return;
	}
	ap = wpas_wps_get_ap_info(wpa_s, bssid);
	if (ap == NULL) {
		return;
	}
	ap->tries++;
	os_get_reltime(&ap->last_attempt);
}
